Spindle for bobbins.



THOMAS HENRY SMITH, OF JAMESTOWN, NEW YORK.

SPINIDLE FOR BOBBINS.

Specification of Letters Patent.

Patented Aug. 28, 1917.

Application filed September 30, 1916. Serial No. 122,952.

To all whom it may concern:

Be it known that I, THOMAS HENRY SMITH, a citizen of the United States,residing at the city of Jamestown, in the county of Chautauqua and Stateof New York, have invented certain new and useful Improvements inSpindles for Bobbins, of which the following, taken in connection withthe accompanying drawings, is a specification.

The invention relates to spindles for bobbins having means for holdingthe bobbin on the spindle; and the improvement consists in providing asimple positive holding means for the bobbin on the spindle whereby theresiliency of the wood of the bobbin holds it from loosening or wabblingor jumping up, yet permits quick and easy removal and replacing of thebobbin on the spindle without loss of time to the operative and withoutcutting or wear on the interior of the bobbin; and the inventionconsists of the novel features and combinations hereinafter set forthand claimed.

In the drawings, Figure 1 is an elevation of the bare bobbin; and Fig. 2is an endwise elevation of the lower end of the bobbin showing thesmooth interior surfaces and the hole extending through the same. Fig. 3is a lengthwise sectional view of the bobbin and the whirl and sleeve onthe spindle showing the corrugated or irregular surfaced sleeve holdingupon the smooth inner wall of the wooden bobbin. Fig. 4 is an elevationof the improved spindle with the annular corrugations or irregularsurface of the whirl sleeve; and Fig. 5 is a similar view of the spindlewith annular grooves around the whirl sleeve to hold against the smoothinner wall of the bobbin.

Like characters of reference refer to corresponding parts in the severalviews.

The numeral 10 designates the spindle which has the whirl 11 with thesolid or integral whirl sleeve 12 above the same.

The whirl 11 and sleeve 12 are preferably made integral and have thetubular lower end opening 13. The sleeve 12 is usually made slightlyconical shape and fits closely within the similarly shaped opening 16 inthe bobbin 14. The bobbin 14 has the tubular opening extendingtherethrough and fitting closely around the upper end of the spindle at15 so that the bobbin 14 can be dropped onto the spindle 10 and sleeve12 and pressed quickly to place and as easily removed in changingbobbins,

The speed of the bobbins and spindles is about ten thousand revolutionsper minute, and at this high speed if the spindle is slightly out ofline or the bobbin unbalanced or imperfectly fitted, this causes thevibration of the spindle and the consequent wabbling and jumping up ofthe bobbin impairing the winding of the bobbin and making waste. Inorder to overcome this difliculty no means can be used. which woulddelay the action of the operative in changing bobbins, hence any twistor too strong holding of the bobbin upon the sleeve 12 or one whichwould cut or wear out the bobbin would not be practical.

In overcoming this difliculty the annular rings or undulating outersurface of the cone or sleeve 12 as shown at 18 is preferred. Theseannular rings provide smooth irregularities over which the tubular innerwall 16 of the bobbin 14 may be pressed and the resiliency of the woodcauses the bobbin to elastically spring over the annular rings 18 andgive just sufficient hold for the bobbin so that it will not work looseor jump up. The depressions in the undulating rings 18 also givesuflicient room for the elastic or resilient wood to spring into evenafter the sleeve or cone 12 and the inner wall 16 wears smooth fromconstant service. It is apparent that the conical undulations 18 willnot wear out or roughen the surface 16 of the cone. The outer surface ofthe bobbin is bound with a metal band 17 which gives durability to thelower end of the bobbin.

In the modification shown in Fig. 5, a series of annular grooves 19which may be graduated as shown are provided in the metal sleeve 12 sothat they provide the necessary irregularities in the surface of thecone 12 over which the wall 16 of the bobbin 14 may be pressed andserves the purpose in holding the bobbin in place upon the spindle, butthe grooves 19 are not as large as the corrugations 18 for the resilientholding of the bobbin, hence said corrugations or grooved surface 18 ispreferred.

Any system, however, which would provide irregularities on the whirlsleeve 12 which would not wear or cut the inner surface 16 of the bobbin14 and which would hold the bobbin 14 so it could be as easily andquickly removed from the spindle 10 and replaced thereon Would attainapplicants purpose in substantially the same manner, the main essentialsbeing to have a heavy metallic sleeve or cone 12, on the vouter surfaceof Which the nonwvearing irregularities are provided, and a smoothsurface lfi on the interior Wall of the resilient Wooden bobbinlt sothat said bobbin may be pressed down over the irregularities on thesleeve 12 and Will hold just sufficiently to keep the .bobbin fromjumping up or Wabbling. {lhe annular undulations or grooves arepreferred to a spira-Lsincethey hold equally upon the surface 16.01? thebobbin at all parts of the periphery of the sleet e 12 and the spindle10 may be turned in either direction. There should usually. be a seriesof these undulations or grooves so that difierentusize openings on thebobbin l l Will-be accommodated as there are slight variations inthebobbins due to imperfect boring of the same.

*1 claim'as new In combinatlon With a Wood bobbln havlng a smooth bore,and a spindle received in S1-iTl: bore, a metal acorn-like membersecured to said spindle and having spaced annular grooves on itsperiphery, said annular grooves having rounded edges so as to grip thebobbin Walls defining said bore by v rHoMAs HENRY sMiTH. lVitnesses p A.SANDBERG, I. E. NoRDsTRoM.

Copies otthis patent'may be obtained for five cents each, by addressingthe Commissioner of Patents,

Washington, D. Q.

